<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form>
        <div class="search">
            <input type="text" class="val">
        </div>
    </form>
    <button id="btn">查询</button>

    <div class="content"></div>
    <script src="./js/ajax.js"></script>
    <script src="./js/search.js"></script>
</body>
</html>